Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a multicast-broadcast user service description message. The UE may communicate, using a multicast-broadcast service (MBS) transport function (MBSTF) client, with an MBS entity of the network entity, in accordance with information included in the user service description message, wherein the MBS entity is split into a multicast delivery function and a unicast application server. Numerous other aspects are described.

For logical multicasting in overlay networks, at a data processing system, an original unicast packet is received from a first component in a first computing node in an overlay network. To cause multicasting in the overlay network the received original unicast packet was unicast by the first computing node only to the data processing system, and a multicast data structure for the overlay network is maintained only by the data processing system, the multicast data structure containing information of each receiver that is configured to receive unicast packets during logical multicasting in the overlay network. From a set of subscriber receivers in the multicast data structure, a subset of the subscriber receivers is selected. A copy of the original unicast packet is unicast to each subscriber receiver in the subset.

The techniques disclosed herein provide a system that can generate targeted positioning of message content for multi-user communication interfaces. In some configurations a system may generate a user interface that displays a number of video stream renderings, wherein individual video stream renderings, e.g., thumbnail views, show a participant of a communication session. When one of the participants sends the user a private message, the system renders at least a portion of the private message in a semi-transparent format as an overlay on the video rendering of the sender. This allows a traditional video stream interface to also function as an organizer for private messages sent to a particular user. This user interface format allows a user to readily identify a broader perspective of chat activity without requiring a user to enter specific chat user interfaces or provide a number of manual input entries to view the private chat content.

A communication method for transmitting multicast data by using a same multicast user plane function (UPF) includes: a first session management function (SMF) obtains forwarding configuration information or quality of service (QoS) context information of multicast data, and sends, to a second SMF, first path information for establishing a transmission path for multicast data transmission between a multicast UPF and a unicast UPF, or second path information for establishing a transmission path between the multicast UPF and an access network device.

The techniques disclosed herein provide a system that can generate targeted positioning of message content for multi-user communication interfaces. In some configurations a system may generate a user interface that displays a number of video stream renderings, wherein individual video stream renderings, e.g., thumbnail views, show a participant of a communication session. When one of the participants sends the user a private message, the system renders at least a portion of the private message in a semi-transparent format as an overlay on the video rendering of the sender. This allows a traditional video stream interface to also function as an organizer for private messages sent to a particular user. This user interface format allows a user to readily identify a broader perspective of chat activity without requiring a user to enter specific chat user interfaces or provide a number of manual input entries to view the private chat content.

The present invention relates to an apparatus and a method for configuring a control message in a broadcasting system for supporting a multimedia service based on an internet protocol. To this end, control information to be recorded in a payload of a control message to be configured is generated based on a table selected from among a plurality of tables for defining the information related to the generation and consumption of a hybrid content when a message type of the control message to be configured is determined to be a type for providing information related to the generation and consumption of a hybrid content. In addition, the information related to the type of the selected table is recorded in an optional field of the control message to be configured.

An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling, start position information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.

For logical multicasting in overlay networks, at a data processing system, an original unicast packet is received from a first component in a first computing node in an overlay network. To cause multicasting in the overlay network the received original unicast packet was unicast by the first computing node only to the data processing system, and a multicast data structure for the overlay network is maintained only by the data processing system, the multicast data structure containing information of each receiver that is configured to receive unicast packets during logical multicasting in the overlay network. From a set of subscriber receivers in the multicast data structure, a subset of the subscriber receivers is selected. A copy of the original unicast packet is unicast to each subscriber receiver in the subset.

The use of Network Virtualization using Overlays over Layer 3 (NVO3) is a growing trend to address networking issues in data centers that make use of virtualization and cloud computing techniques. Additional considerations may be required to support application-specific multicast traffic in such overlay networks. Systems and methods are provided for an overlay network control function node to allocate one or more overlay network edge nodes to act as a multicast gateway for each network segment. The gateway can distribute multicast traffic to other participating edge nodes in its same network segment, thus reducing network traffic.

A method and system for supporting a cross-domain communication session between communication platforms using a bridge server are provided. In one example, the method includes registering the bridge server with multiple platforms using a user identifier. A request is received from one of the platforms to establish a communication session with a user corresponding to the user identifier. A communication leg is created for each of the platforms. The leg from which the request was received is an incoming leg and the other legs are outgoing legs. The request is sent over the outgoing legs. An acceptance is received from one of the outgoing legs. A cancel message is sent over the outgoing legs from which the acceptance was not received. The acceptance is sent over the incoming leg. The incoming leg and the outgoing leg from which the acceptance was received are bridged to establish the session.